SOLUTION: x/r +y/t=1 change the subject of the formulae to x
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Question 719197: x/r +y/t=1 change the subject of the formulae to x
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
There is only one formula, so the plural, "formulae" is inappropriate.
Add 
to both sides.
Multiply both sides by 
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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